2018python全栈爬虫高端自动化课程大纲01.课堂笔记03参数注解

defadd(x,returnx+yprint(add(4,5)) o','world'))add(4,' ation defadd(x,:paramx::paramy::return:returnx+y函数注解Function pdefadd(x:int,y:int)->int::paramx::paramy::return:returnx+yprint(add(4,5))print(add('mag','edu'))函数注解FunctionppPython3.5 p函数注解的信息，保存 ppPython3.6i:int= p pinspet importdefadd(x:int,y:int,*args,**kwargs)->int:returnx+ysig=inspect.signature(add)print(sig,type(sigprint('params:',sig.parameters)#OrderedDictprint('return:',sig.return_annotation) pParameter pimportdefadd(x,y:int=7,*args,z,t=10,**kwargs)->int:returnx+ysig=inspect.signature(add)print('paramssig.parametersprint('return:',sig.return_annotation)fori,iteminenumerate(sig.parameters.items()):name,param=itemprint(i+1,name,param.annotation,param.kind,param.default)print(param.defaultisparam.empty,end='\n\n')pdefadd(x,y:int=7)->returnx+ pdefadd(x,y:int=7)->returnx+ p importdefadd(x,y:int=7)->int:returnx+ydefdefwrapper(*args,**kwargs):sig=inspect.signature(fn)params=sig.parametersvalues=list(params.values())fori,pinenumerate(args):

ifisinstance(p,values[i].annotation):#实参和形 fork,vinifisinstance(v,params[k].annotation):#实参和形 returnfn(*args,**kwargs)returnwrapperimportsig=inspect.signature(fn)params=sig.parametersfori,pinenumerate(args):param=ifparam.annotationisnotparam.emptyandnotisinstance(p,fork,vinifparams[k].annotationisnotinspect._emptyandnotisins